Abstract: The data on the performance in water gas shift reaction of a powder 5 wt% Pt/Ce0.75Zr0.25O2 and a structured 0.33 wt% Pt/Ce0.75Zr0.25O2/θ-Al2O3/FeCrAl catalysts are reported in this work. For the powder one the lowest outlet CO concentrations were shown to be 0.5, 0.9 and 1.5 vol% corresponding to the initial ones of 5, 10 and 15 vol%, respectively; the temperature required to reach these values did not exceed 310 °C. The quasi in situ XPS data have shown that doping CeO2 with Zr enhances the reducibility of the oxide allowing Ce3+ formation without any treatment. Additionally, it was found that there are 20–30% of nonmetallic Pt atoms on the surface even after a treatment in CO at 300 °C. For the structured catalyst the downward temperature gradient along the monolith was observed with a dispersion of 50–60 °C. The lowest CO concentrations were observed at the temperatures at the catalyst's back point of 280 °C–3.9 and 4.3 vol% CO in the dry gas for 15,700 and 31,400 cm3·gcat−1·h−1, respectively, for 10 vol% CO in the feed gas.

Cite: Gorlova A.M. , Panafidin M.A. , Shilov V.A. , Pakharukova V.P. , Snytnikov P.V. , Potemkin D.I.
Powder and Structured Pt/Ce0.75Zr0.25O2-Based Catalysts: Water Gas Shift Performance and Quasi in situ XPS Studies
International Journal of Hydrogen Energy. 2023. V.48. N32. P.12015-12023. DOI: 10.1016/j.ijhydene.2022.06.028 WOS Scopus РИНЦ AN OpenAlex

Dates:

Submitted:	Mar 1, 2022
Accepted:	Jun 4, 2022
Published online:	Jun 30, 2022
Published print:	Apr 15, 2023

Identifiers:

Web of science:	WOS:000956991300001
Scopus:	2-s2.0-85133730451
Elibrary:	53840738
Chemical Abstracts:	2022:1620592
OpenAlex:	W4283726425

Citing:

DB	Citing
Scopus	12
Web of science	11
Elibrary	15
OpenAlex	15

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